print_req_error: I/O error, dev nbd3, sector 2 print_req_error: I/O error, dev nbd3, sector 0 ldm_validate_partition_table(): Disk read failed. Dev nbd3: unable to read RDB block 0 nbd3: unable to read partition table INFO: task systemd-udevd:9206 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26008 9206 4320 0x00000124 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5036 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcd0 block/partitions/acorn.c:366 check_partition+0x2ff/0x5c5 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb73/0x27a0 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1c2/0x340 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f4657588840 RSP: 002b:00007fff4318a688 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055daa257fcf0 RCX: 00007f4657588840 RDX: 000055daa1859fe3 RSI: 0000000000080000 RDI: 000055daa257e570 RBP: 0000000000000001 R08: 000055daa1859670 R09: 0000000000000110 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 000055daa2580480 R15: 00000000ffffffff INFO: task systemd-udevd:9293 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26008 9293 4320 0x00000124 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5036 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcd0 block/partitions/acorn.c:366 check_partition+0x2ff/0x5c5 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb73/0x27a0 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1c2/0x340 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f4657588840 RSP: 002b:00007fff4318eec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055daa2578730 RCX: 00007f4657588840 RDX: 000055daa1859fe3 RSI: 00000000000a0800 RDI: 000055daa25791c0 RBP: 00007fff4318f040 R08: 000055daa1859670 R09: 0000000000000010 R10: 000055daa1859d0c R11: 0000000000000246 R12: 00007fff4318ef90 R13: 000055daa257ebe0 R14: 0000000000000003 R15: 000000000000000e INFO: task systemd-udevd:9422 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26008 9422 4320 0x00000124 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5036 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcd0 block/partitions/acorn.c:366 check_partition+0x2ff/0x5c5 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb73/0x27a0 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1c2/0x340 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f4657588840 RSP: 002b:00007fff4318f4b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055daa257ea60 RCX: 00007f4657588840 RDX: 000055daa1859fe3 RSI: 00000000000a0800 RDI: 000055daa2579140 RBP: 00007fff4318f630 R08: 000055daa1859670 R09: 0000000000000010 R10: 000055daa1859d0c R11: 0000000000000246 R12: 00007fff4318f580 R13: 000055daa257fcf0 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.1:9456 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28344 9456 7714 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x480 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417811 RSP: 002b:00007ffd07c19b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000417811 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fe481382700 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: ffffffffffffffff R13: 0000000000000002 R14: 0000000000000003 R15: 000000000118c07c INFO: task syz-executor.1:9462 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28504 9462 7714 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb73/0x27a0 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1c2/0x340 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4179b1 RSP: 002b:00007fe4813a2820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004179b1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fe4813a2850 RBP: 000000000118c008 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000293 R12: 000000000118bfd4 R13: 00007ffd07c19aff R14: 00007fe4813a39c0 R15: 000000000118bfd4 INFO: task syz-executor.4:9494 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28344 9494 7716 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x480 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417811 RSP: 002b:00007ffc6109d750 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000417811 RDX: 0000001b2dc20000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffc6109d830 R11: 0000000000000293 R12: 000000000118c9a0 R13: 000000000118c9a0 R14: 00000000000003e8 R15: 000000000118c07c INFO: task syz-executor.4:9499 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28904 9499 7716 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb73/0x27a0 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1c2/0x340 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4179b1 RSP: 002b:00007fe6216e9820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004179b1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fe6216e9850 RBP: 000000000118c008 R08: 000000000000000f R09: 0000000000000000 R10: 00007fe6216ea9d0 R11: 0000000000000293 R12: 000000000118bfd4 R13: 00007ffc6109d6df R14: 00007fe6216ea9c0 R15: 000000000118bfd4 INFO: task syz-executor.2:9517 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28344 9517 7713 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x480 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417811 RSP: 002b:00007ffeadeb3dc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000417811 RDX: 0000001b2d920000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffeadeb3ea0 R11: 0000000000000293 R12: 000000000118c9a0 R13: 000000000118c9a0 R14: 00000000000003e8 R15: 000000000118c07c INFO: task syz-executor.2:9522 blocked for more than 140 seconds. Not tainted 4.14.209-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28904 9522 7713 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb73/0x27a0 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1c2/0x340 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4179b1 RSP: 002b:00007fa44d532820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004179b1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fa44d532850 RBP: 000000000118c008 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000118bfd4 R13: 00007ffeadeb3d4f R14: 00007fa44d5339c0 R15: 000000000118bfd4 Showing all locks held in the system: 1 lock held by khungtaskd/1529: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4548 1 lock held by systemd-udevd/9206: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by systemd-udevd/9293: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by systemd-udevd/9422: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.1/9456: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x480 fs/block_dev.c:1826 1 lock held by syz-executor.1/9462: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.4/9494: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x480 fs/block_dev.c:1826 1 lock held by syz-executor.4/9499: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.2/9517: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x480 fs/block_dev.c:1826 1 lock held by syz-executor.2/9522: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1529 Comm: khungtaskd Not tainted 4.14.209-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x14b/0x1f1 lib/dump_stack.c:58 nmi_cpu_backtrace.cold.0+0x3c/0x78 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xf6/0x11a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x51b/0xa70 kernel/hung_task.c:274 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4313 Comm: systemd-journal Not tainted 4.14.209-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8881dee30080 task.stack: ffff8881dee38000 RIP: 0010:hlock_class kernel/locking/lockdep.c:148 [inline] RIP: 0010:mark_lock+0x7/0x11a0 kernel/locking/lockdep.c:3168 RSP: 0018:ffff8881dee3f7e0 EFLAGS: 00000002 RAX: 000000000000000c RBX: 0000000000000001 RCX: 0000000000000008 RDX: 0000000000000008 RSI: ffff8881dee30930 RDI: ffff8881dee30080 RBP: ffff8881dee3f9b8 R08: ffff8881dee30950 R09: 0000000000000008 R10: 0000000000000028 R11: ffff8881dee30080 R12: ffff8881dee308f4 R13: ffff8881dee30952 R14: 0000000000000001 R15: ffff8881dee30930 FS: 00007ff8af7ea8c0(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8acc9a000 CR3: 00000001decf2001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x17e/0x3e0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:160 __debug_check_no_obj_freed lib/debugobjects.c:738 [inline] debug_check_no_obj_freed+0x156/0x890 lib/debugobjects.c:776 free_pages_prepare mm/page_alloc.c:1064 [inline] __free_pages_ok+0x20f/0xe60 mm/page_alloc.c:1262 __free_pages+0x5b/0x80 mm/page_alloc.c:4252 kmem_freepages.isra.7+0x131/0x1c0 mm/slab.c:1466 slab_destroy+0x24/0x60 mm/slab.c:1723 slabs_destroy+0x6b/0x90 mm/slab.c:1739 cache_flusharray mm/slab.c:3483 [inline] ___cache_free+0x205/0x2c0 mm/slab.c:3525 qlink_free mm/kasan/quarantine.c:147 [inline] qlist_free_all+0x85/0x120 mm/kasan/quarantine.c:166 quarantine_reduce+0x145/0x170 mm/kasan/quarantine.c:259 kasan_kmalloc+0x9b/0xc0 mm/kasan/kasan.c:536 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc mm/slab.c:3390 [inline] kmem_cache_alloc+0x11b/0x3e0 mm/slab.c:3550 getname_flags+0xb8/0x510 fs/namei.c:138 getname fs/namei.c:209 [inline] user_path_create fs/namei.c:3732 [inline] SYSC_mkdirat fs/namei.c:3864 [inline] SyS_mkdirat+0x92/0x210 fs/namei.c:3856 SYSC_mkdir fs/namei.c:3883 [inline] SyS_mkdir+0x14/0x20 fs/namei.c:3881 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7ff8aeaa6687 RSP: 002b:00007ffe42151208 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffe42154120 RCX: 00007ff8aeaa6687 RDX: 00007ff8af517a00 RSI: 00000000000001ed RDI: 000055ad72a628a0 RBP: 00007ffe42151240 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffe42154120 R15: 00007ffe42151730 Code: 8d 65 d8 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 4c 89 ff e8 aa 9f 3d 00 eb d5 e8 c3 9f 3d 00 eb 84 90 55 4c 8d 46 20 89 d1 <48> b8 00 00 00 00 00 fc ff df 48 89 e5 41 57 49 89 ff 41 56 41